Fixed an accidental undefined leak into getAccessibleSymbolChain's cache key (#58669)

Author: Andarist

src/compiler/checker.ts

@@ -5566,7 +5566,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         const cache = (links.accessibleChainCache ||= new Map());
         // Go from enclosingDeclaration to the first scope we check, so the cache is keyed off the scope and thus shared more
         const firstRelevantLocation = forEachSymbolTableInScope(enclosingDeclaration, (_, __, ___, node) => node);
-        const key = `${useOnlyExternalAliasing ? 0 : 1}|${firstRelevantLocation && getNodeId(firstRelevantLocation)}|${meaning}`;
+        const key = `${useOnlyExternalAliasing ? 0 : 1}|${firstRelevantLocation ? getNodeId(firstRelevantLocation) : 0}|${meaning}`;
         if (cache.has(key)) {
             return cache.get(key);
         }